Description

2,2,4,4,6,6-Hexamethylbiphenyl-3,3-Diamine is a high-purity, sterically hindered aromatic diamine compound of significant industrial interest. Its unique molecular structure, featuring multiple methyl groups, makes it a valuable building block for advanced material synthesis. This specialty chemical is primarily sought by R&D and production teams in the polymer and pharmaceutical intermediates sectors for developing novel high-performance materials.

Application

• Polymer Chemistry: Serves as a key monomer or chain extender in the synthesis of specialized polyimides, polyamides, and polyurethanes, imparting enhanced thermal stability and mechanical properties.
• Pharmaceutical Intermediates: Used in the research and development of active pharmaceutical ingredients (APIs), particularly where a rigid, bulky diamine core is required for specific biological activity.
• Advanced Material Synthesis: Acts as a precursor for ligands in catalysis and as a building block for organic electronic materials, such as those used in OLEDs.
• Epoxy Resin Systems: Functions as a curing agent or hardener for high-performance epoxy formulations, contributing to improved chemical resistance and glass transition temperatures.
• Dye and Pigment Manufacturing: Utilized in the synthesis of complex organic dyes and pigments, where its structure can influence color fastness and solubility.
• Research & Development: A valuable tool for academic and industrial chemists exploring new reactions and material properties of sterically hindered aromatic compounds.

Basic Information

Product Name	2,2,4,4,6,6-Hexamethylbiphenyl-3,3-Diamine
CAS No.	37055-28-0
Molecular Formula	C18H24N2
Molecular Weight	268.40 g/mol
Synonyms	3,3'-Diamino-2,2',4,4',6,6'-hexamethylbiphenyl; 2,2',4,4',6,6'-Hexamethylbiphenyl-3,3'-diamine; 3,3'-Diamino-2,2',4,4',6,6'-hexamethyl-1,1'-biphenyl; HMDA (context-specific); Hexamethylbiphenyldiamine; Sterically hindered biphenyl diamine; Biphenyl-3,3'-diamine, 2,2',4,4',6,6'-hexamethyl-
EINECS	Contact for details

Quality Control

Our 2,2,4,4,6,6-Hexamethylbiphenyl-3,3-Diamine is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC and GC analysis, to ensure high purity and consistency. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents, strong acids, and moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.